title: Effect of IGF-II genotype and pig rearing system on the final characteristics of dry-cured Iberian hams.
abstract: The effect of the IGF-II genotype (AG vs. GG) on the morphological and compositional parameters, the fatty acid composition of intramuscular fat, the odour concentration (analysed by dynamic olfactometry) and the volatile compound profile (analysed by proton transfer reaction time-of-flight mass spectrometry) of dry-cured Iberian ham was studied for the first time, and compared to the effect of pig rearing system (high-oleic concentrated feed vs. acorn and grass). The IGF-II genotype had no effect on most variables. However, it influenced the concentration of some odorants (methanethiol and octanal), although it did not affect odour concentration. Conversely, the rearing system had a significant effect on a large number of ham variables. Results indicate a negligible effect of the IGF-II genotype on the final ham quality and confirm that the rearing system has a marked effect.
authors.affiliation: Food Technology, Facultad de Veterinaria, UEx, Campus Universitario s/n, 10003 Cáceres, Spain. josapuri@unex.es
authors.forename: J
authors.initials: J
authors.lastname: Sánchez Del Pulgar
authors.forename: A I
authors.initials: AI
authors.lastname: Carrapiso
authors.forename: R
authors.initials: R
authors.lastname: Reina
authors.forename: F
authors.initials: F
authors.lastname: Biasioli
authors.forename: C
authors.initials: C
authors.lastname: García
mesh_terms: D000447:Aldehydes / Q000378:metabolism; D000821:Animal Feed; D000822:Animal Husbandry / Q000379:methods*; D000818:Animals; D004032:Diet / Q000662:veterinary*; D005227:Fatty Acids / Q000378:metabolism; D005838:Genotype; D007335:Insulin-Like Growth Factor II / Q000235:genetics*; D008460:Meat / Q000032:analysis*; D009754:Nuts; D009812:Odorants; D019301:Oleic Acid / Q000494:pharmacology; D006109:Poaceae; D029963:Quercus; D013438:Sulfhydryl Compounds / Q000378:metabolism; D013552:Swine; D055549:Volatile Organic Compounds / Q000378:metabolism
chemical_list: D000447:Aldehydes; D005227:Fatty Acids; D013438:Sulfhydryl Compounds; D055549:Volatile Organic Compounds; D019301:Oleic Acid; C005231:methylmercaptan; D007335:Insulin-Like Growth Factor II; C031639:caprylic aldehyde
keywords: Dynamic olfactometry; Fatty acids; IGF-II; Iberian ham; PTR-ToF-MS; Rearing system